Improvement in roofing fabrics



awn gem fitment Whiter.

Letters Patent No. 108,334, dated October 18, 1870.

IMPROVEMENT IN ROOFING FABRICS The Schedule referred to in these LettersPatent and making part of the same I, DRAKE W. DEMON, of Ithaca,Tompkins county, New York, have invented an Improved Roofing, of whichthe following is a specification.

My object is to utilize flax-waste and make it into a batting, and tosaturate it either wholly or in part with asphaltic and coal-tarmixtures; and I make the waste tow of flax, combined with the wastehaulm or sllives of the flax plant, into layers or rolls of batting, byany convenient process; and, by rollers, hot or cold, or other similarprocess, I cause the asphaltio mixture, coal-tar, or coal-tar resin, topenetrate the batting and make rolls or sheets of roofingmaterial.

When I use the waste tow of flax alone, it makes an excellent batting,but is more costly than when I combine, as far as possible, the shiveswith it; therefore it is to my advantage to use as much of the shives asI can in my batting.

Both the tow-waste and the shives-waste are very slow and dilficult to'rot, and they, unprotected, long resist atmospheric changes. Alone thebatting is not water-tight, but, by any of the common prepamtions ofasphaltic nature, it easily is made into an exeellentmoting sheet ormaterial.

Further, I prefer to unite two-sheets of flax-waste them, the mixturesor material stated in my patent dated May 26,1868,No. 78,269, and in mypatent dated April 2, 1867, No. 63,371, to saturate or blend theabove-described sheets.

Claim.

I claim- A roofing-batting, made or w to, and made impervious to waterby asphah l. tistc substances,

substantially as described.

l). W, UICSION.

Witnesses SAMUEL J. PARKER,

A.M. LUCAS.

